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https://github.com/elitak/nixos-infect.git
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prepareEnv,checkEnv refactor; other tiny fixes
This commit is contained in:
Eric Litak
parent
7c2f3e8e2d
commit
cad9b43b69
1 changed files with 58 additions and 41 deletions
99
nixos-infect
99
nixos-infect
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@ -1,6 +1,6 @@
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#! /usr/bin/env bash
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# Use Digital Ocean Droplet image:
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# These are the only supported Digital Ocean images:
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#
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# Fedora 24 x64
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# Ubuntu 16.04 x64
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@ -45,10 +45,7 @@
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# simply didn't work for me! (old system was being because grub wasnt properly
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# reinstalled)
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set -ex
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export disk=$( (>/dev/null ls -l /dev/vda && echo vda) \
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|| (>/dev/null ls -l /dev/sda && echo sda) )
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set -ex -o pipefail
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makeConf() {
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# NB <<"EOF" quotes / $ ` in heredocs, <<EOF does not
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@ -142,6 +139,7 @@ EOF
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}
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makeSwap() {
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# TODO check currently available swapspace first
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swapFile=`mktemp`
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dd if=/dev/zero of=$swapFile bs=1M count=$((1*1024))
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chmod 0600 $swapFile
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@ -149,52 +147,71 @@ makeSwap() {
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swapon $swapFile
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}
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makeConf
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makeSwap # smallest (512MB) droplet needs extra memory!
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prepareEnv() {
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which dnf && dnf install -y perl-Digest-SHA # Fedora 24
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which bzcat || (which yum && yum install -y bzip2) # CentOS
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which dnf && dnf install -y perl-Digest-SHA # Fedora 24
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which bzcat || (which yum && yum install -y bzip2) # CentOS
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# $disk is used in makeConf()
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disk=$( (test -e /dev/vda && echo vda)
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|| (test -e /dev/sda && echo sda) )
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# DigitalOcean doesn't seem to set USER while running user data
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export USER="root"
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export HOME="/root"
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# DigitalOcean doesn't seem to set USER while running user data
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export USER="root"
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export HOME="/root"
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groupadd -r nixbld -g 30000 || true
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seq 1 10 | xargs -I{} useradd -c "Nix build user {}" -d /var/empty -g nixbld -G nixbld -M -N -r -s `which nologin` nixbld{} || true
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# FIXME run only if necessary
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groupadd -r nixbld -g 30000 || true
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seq 1 10 | xargs -I{} useradd -c "Nix build user {}" -d /var/empty -g nixbld -G nixbld -M -N -r -s `which nologin` nixbld{} || true
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}
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curl https://nixos.org/nix/install | sh
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checkEnv() {
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# TODO: use wget -O- if available instead of curl. This involves patching the
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# /nix/install script to not check for curl and use `wget -O` instead of
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# `curl -L # -o`
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( which curl || echo "ERROR: Missing curl" ) && \
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( which bzcat || echo "ERROR: Missing bzcat" ) && \
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( which perl || echo "ERROR: Missing perl" )
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}
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source ~/.nix-profile/etc/profile.d/nix.sh
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infect() {
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makeConf
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makeSwap # smallest (512MB) droplet needs extra memory!
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[ -z "$NIX_CHANNEL"] && NIX_CHANNEL="nixos-16.09"
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nix-channel --remove nixpkgs
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nix-channel --add "https://nixos.org/channels/$NIX_CHANNEL" nixos
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nix-channel --update
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curl https://nixos.org/nix/install | sh
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export NIXOS_CONFIG=/etc/nixos/configuration.nix
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source ~/.nix-profile/etc/profile.d/nix.sh
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nix-env --set \
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-I nixpkgs=$HOME/.nix-defexpr/channels/nixos \
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-f '<nixpkgs/nixos>' \
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-p /nix/var/nix/profiles/system \
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-A system
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[ -z "$NIX_CHANNEL"] && NIX_CHANNEL="nixos-16.09"
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nix-channel --remove nixpkgs
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nix-channel --add "https://nixos.org/channels/$NIX_CHANNEL" nixos
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nix-channel --update
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# Remove nix installed with curl | bash
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rm -fv /nix/var/nix/profiles/default*
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/nix/var/nix/profiles/system/sw/bin/nix-collect-garbage
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export NIXOS_CONFIG=/etc/nixos/configuration.nix
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# Follow the symlinks
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[ -L /etc/resolv.conf ] && mv -v /etc/resolv.conf /etc/resolv.conf.lnk && cat /etc/resolv.conf.lnk > /etc/resolv.conf
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nix-env --set \
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-I nixpkgs=$HOME/.nix-defexpr/channels/nixos \
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-f '<nixpkgs/nixos>' \
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-p /nix/var/nix/profiles/system \
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-A system
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# Staging for the Nix coup d'état
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touch /etc/NIXOS
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cat > /etc/NIXOS_LUSTRATE << EOF
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etc/nixos
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etc/resolv.conf
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root/.nix-defexpr/channels
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EOF
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# Remove nix installed with curl | bash
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rm -fv /nix/var/nix/profiles/default*
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/nix/var/nix/profiles/system/sw/bin/nix-collect-garbage
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rm -rf /boot.bak && mv -v /boot /boot.bak &&
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/nix/var/nix/profiles/system/bin/switch-to-configuration boot
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# Follow the symlinks
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[ -L /etc/resolv.conf ] && mv -v /etc/resolv.conf /etc/resolv.conf.lnk && cat /etc/resolv.conf.lnk > /etc/resolv.conf
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reboot
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# Staging for the Nix coup d'état
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touch /etc/NIXOS
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cat > /etc/NIXOS_LUSTRATE << EOF
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etc/nixos
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etc/resolv.conf
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root/.nix-defexpr/channels
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EOF
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rm -rf /boot.bak && mv -v /boot /boot.bak &&
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/nix/var/nix/profiles/system/bin/switch-to-configuration boot
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}
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prepareEnv
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checkEnv && infect && reboot
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